You may also like

Jewellery Boxes

Can you find the value of the jewels?

Average Discovery

Find the missing number if the mean, median and mode are all the same.

Algebraic Average

The mean of three numbers x, y and z is x. What is the mean of y and z?

Mean Balance

Age 14 to 16 Short
Challenge Level

The mean of the set of numbers 8, 4, 5, 4,  and 6 is 6.

If another  is added to the set, then the mean is still 6.

What numbers do  and  represent?

This problem is adapted from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.